Sewage Treatment Process
Waste water needs to be treated before it is recycled. This means that contaminants, chemicals, and other harmful substances have to be removed from the water for it to be safely released into systems that can be re-used. Water draining from toilets, washers, industries and other uses cannot be returned back to the system without being cleaned in the following process. Read more great facts on sewage treatment bacteria, click here.
The first step is the pre-treatment process. Raw sewage water has to be pre-treated to remove large debris that usually find their way into the sewage system. These may include sanitary towels, wet wipes, leaves, tampons and other large pieces. Usually, the debris are often the non-biodegradable, those that cannot be broken down by bacteria in a natural decay process. This debris are dried and taken to an incinerator or a landfill site. During this process, sand and silt are removed and taken to landfill sites. For more useful reference regarding sewage ejection pump, have a peek here.
The next process is the primary sewage treatment, which is a settlement stage that involves settlement of organic solids. The solid will sink forming a sludge whereas fats will float on the water forming a crust. This crust are worked on by aerobic bacteria and partially broken down. The liquid that is trapped in between the two layers is then drained in the secondary stage. This is treated further.
The secondary stage involves breakage of organic waste using aerobic bacteria. The process also caters for further reduction of contaminants and detergents. The results of this stage is therefore considered as a safe effluent that can now be released into water sources without the fear of causing any harm to living organisms. The dead bacteria will act as humus. It is important for every sewage treatment company to have the necessary certification.
In some cases a tertiary treatment stage is necessary. This involves further breaking down of the discharge in an aerobic process. Usually, there is a need to reduce the concentration of phosphorous and nitrogen. It also involves disinfection process where other techniques are used to purify the water. Here there is the use of UV rays, chlorination or ozone treatment when bacteria and viruses have to be removed.
There is also the alternative of private sewage water treatment. In these packages, stage one and the tertiary stages are often eliminated since the owners are careful of what they dispose in the system. There are many types of sewage treatments. The important thing is to ensure that you look for the certification. Please view this site http://www.wikihow.com/Recycle-Water for further details.